﻿/************************************************************************

   Extended Silverlight Toolkit

   Copyright (C) 2010-2012 Xceed Software Inc.

   This program is provided to you under the terms of the Microsoft Public
   License (Ms-PL) as published at http://extendedsilverlight.codeplex.com/license

   Please purchase a commercial version of this toolkit if you are using
   it in a commercial product. The commercial versions support the project,
   and also include more features for each control, priority support,
   source code, updates, removed watermark, and a proprietary license.

   Visit http://xceed.com and follow @datagrid on Twitter.

  **********************************************************************/

using System;
using System.Collections;
using System.Collections.Generic;

namespace Xceed.Silverlight.Data
{
  internal interface IGroupCollection : ICollection<DataPath>, ICollection
  {
    bool IsCollapsedByDefault
    {
      get;
    }

    Nullable<bool> AnyCollapsedGroup
    {
      get;
    }

    Nullable<bool> AnyExpandedGroup
    {
      get;
    }

    event EventHandler<GroupCollectionChangedEventArgs> CollectionChanging;
    event EventHandler<GroupCollectionChangedEventArgs> CollectionChanged;

    void CollapseAll();
    void ExpandAll();

    void Collapse( DataPath item );
    void Expand( DataPath item );
  }
}
